3RepetitionThe Repetitiveness is classified as When the body part is idle most of the timeVery Lowfrequently pausing, waiting for equipmentLowin steady motionMediumin rapid motionHighin constant rapid motion, difficult to keep up.Very High 4Low Repetition

For manual material handling tasks, assess B1-B3. This refers to how often the person needs to bend, rotate his/her back when performing the task. Several back movements may happen within one task cycle.

For tasks other then manual handling, such as sedentary work or repetitive tasks performed in standing or seated position, ignore B1-B3 and assess B4-B5.

QEC Instructions 109Shoulder/arm posture (C1-C3)

Assessment should be made when the shoulder/arm is most heavily loaded during work, but not necessarily at the same time as the back is assessed.

QEC Instructions 110Shoulder/arm movement (D1-D3)

Infrequent if there is no regular motion pattern.

Frequent if there is a regular motion pattern with some short pauses.

Very frequent if there is a regular continuous motion pattern during work.

This refers to the movement of the wrist/hand and forearm, excluding the movement of the fingers.

QEC Instructions 113Neck movement (G1-G3)

The neck can be considered to be excessively bent or twisted if it is bent or twisted at an obvious angle (or more than 20?) relative to the torso.

QEC Instructions 114QEC ExerciseQEC Instructions 115Task Analysis

An outline or set of instructions for sequenced actions to accomplish a task

Also known as Work, Job, or Methods Analysis

Objective To identify work methods by individual components and evaluate for risk factors.

116Video Taping Techniques

The basics

name of company and location of taping

date of taping

videographers name

either name the task being recorded during taping or keep track on paper.

117Video Taping Techniques

Taping

Take a full body shot of the employee. Include the surface on which the employee is standing or seated.

If several employees are performing the same task, tape at least three employees.

Tape the worst case, best case, and the average situations.

Following the long shot, zoom in to focus on the area or function of greatest concern, if known.

Video tape the employee from all sides, if possible (front, back, both sides)

118Video Taping Techniques

Taping Duration

Videotape each task long enough to show what is being evaluated.

Important to tape at least one cycle.

For cycle times less than 30 seconds, tape 10 cycles.

For cycles greater than 30 seconds, tape at least one cycle.

1191991 NIOSH Lifting ModelVariables H horizontal location from midpoint between ankles to the center of the load at origin of lift (inches) V vertical location of the hands at the beginning of lift measured from floor to hands (inches) D vertical travel distance from origin to destination (inches) F average frequency of lift (lifts/minute) A angle of asymmetry - angular measure of how far the object is displaced from the front of the workers body at the beginning of the lift (degrees) DAVH 1201991 NIOSH Lifting ModelCalculations, where LC load constant 51 lbs HM horizontal multiplier 10/H VM vertical multiplier 1- (0.0075 V-30 ) DM distance multiplier 0.82 (1.8/D) AM asymmetry multiplier 1 - (0.0032 x A) FM frequency multiplier FROM TABLE CM coupling multiplier FROM TABLE therefore RWL Recommended Weight Limit (LC)(HM)(VM)(DM)(AM)(FM)(CM) (the amount of weight that nearly all healthy workers could lift for up to 8 hours without an increased risk for developing low back pain) LI lifting index Load Weight/RWL 1.0ltLIlt3.0 changes should be considered - some workers may be at risk LI gt3.0 changes may be needed immediately- nearly all workers appear to be at increased risk 1211991 NIOSH LiftingThe 1991 equation does not apply for any task that includes lifting/lowering

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